Rule Config: Bounce Address Tag Verification (BATV)

About this task

Bounce Address Tag Verification (BATV) allows the appliance to distinguish between
legitimate and illegitimate bounce (NDR) messages by tagging each message with a
unique signature. Upon creation of this rule, all outbound messages will be tagged
for the users and groups to which this rule applies, even if the rule is not active.

Note

All outbound mail must be sent through the appliance to ensure that BATV can
function correctly.

Enabling BATV will not block emails that have been identified by SophosLabs as
automatically generated responses. The Treat all auto-responders
identified by SophosLabs as bounces option will cause any email
messages identified by SophosLabs as automatically generated responses to be treated
as bounces.

Note

Enabling this option will quarantine all auto-responses that have been identified
by SophosLabs, such as vacation responders, and not just invalid auto-responses.